Fraud-preventing device for coin-controlled machines



April 7, 1931. w. MACKAY 1,800,090

FRAUD PREVENTING DEVICE FOR COIN CONTROLLIED MACHINES Filed March 3, 1950 S: Yr; 5 M/ Irwcnlor A llorney Patented Apr. 7, 1931 UNITED STATES PATENT OFFICE WILLIAM MACKAY, OF NEW YORK, N. Y., ASSIGNOR TO PUBLIC SERVICE RADIOS, INC., OF WEST HAVEN, CONNECTICUT FRAUD-PREVENTING DEVICE FOR COIN -CONTROLLED MACHINES Application filed March 3, 1930. Serial No. 432,844.

This invention relates to new and useful improvements in fraud preventing devices for com controlled machines and is intended for use particularly on coin controlled radio 6 receiving sets but it is to be understood that they may be used on any type of coin controlled machine for which the same is found adapted.

The primary object of the invention is to provide, in a manner as hereinafter set forth, a fraud preventing device for coin controlled machines of the aforementioned character which embodies a construction and arrange ment of parts whereby slugs or coins of a size smaller than that of the correct coin will be prevented from entering the connecting or operating mechanism of the machine.

Another object of the invention is to provide a fraud preventing device of the character set forth which will prevent the insertion of slugs or coins of greater size than that of the proper coin.

Other objects of the invention are to provide a fraud preventing device for coin con 5 trolled machine of the aforementioned character which may be expeditiously installed, strong, durable, simple in construction, efficient in its use and which may be manufactured at low cost.

' 030 All of the foregoing and still further objects and advantages of the invention may become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein Figure 1 is a view in front elevation of the invention. i

b Figure 2 is a vertical sectional view taken substantially on the line 2-2 of Figure 4.

Figure 3 is a vertical longitudinal sectional view through the device.

Figure 4; is a horizontal sectional view thereof.

7 Referring to the drawings in detail, it will be seen that the reference numeral 1 designates a fiat rectangular metallic plate having lugs provided with threaded sockets 2 projecting from its inner side for the recep.

tion of securing elements (not shown) for mounting the same on the coin controlled machine a portion of which is designated by the reference numeral 3 It is understood, of

course, that the plate 1 is disposed over an I opening in the wall 3 of the machine and said opening isdesignated at at as seen in Figure 3.

An integral inclined platform 5 is formed on an intermediate portion of the inner side ofthe plate 1 and has mounted on its free endan integral upstanding flange 6 which is disposed in parallel opposed relation to the plate 1. The plate 1 and the flange 6 are provided with aligned slots 7 and 8, respectively. Integralwebs 9 and 10 are formed integrally on the inner side of the flange 6 on opposite side of the slot 8 therein and terminates in spaced relation to the plate 1 on opposite side of the slot 7 therein. An end wall 11 is mounted between the flange 6 and plate 1 on one end of theledgeo in spaced opposed relation to the web 10. From a study of Figure 2 of the drawings, it will further be seen that the lower edge of each of the webs 9 and 10 is disposed in spaced parallelism to the ledge 5. It will further be seen that said ledge 5 is provided with '1 slot 12 disposed between the slots 7 and 8 of the plate 1 and upstanding flange 7.

A coin carriage is mounted for sliding movement on the ledge 5 between the plate 1 and. the flange 6 and said carriage comprises an inclined base portion 13 mounted for sliding movement on the ledge 5 and having its inner marginal portion disposed in a groove or channel 14 in the lower inner side of. the flange 6. The base portion 13 extends slidably beneaththe webs 9 and 10 and projects into the compartment 15 formed by the web 10 and the end wall 11. Extending upwardly from the outer marginal edge of the base portion 13 is an extension 16 which is slidably disposed against the inner side of the plate 1 and which is provided with a slot 17 adapted to be brought into registry with the slot 7 of said plate. An abutment 18 is formed integrally on the extension 16 of the carriage and isdisposed parallel with the web 10 and is adapted for engagement therewith. A eompressible coil spring 19 is disposed with in the compartment 15 and has its opposite ends impinged against the end wall 11 and the abutment 18 and yieldingly urges the coin carriage to the position clearly illustrated in Figure 4 of the drawings wherein the slot 17 therein is in registry with the slot- 7 of the plate 1. In this position, the abutment '18 is engaged against the web 10 and said abutment acts as a stop for the coin carriage and limits the sliding movement thereof under the impulse of the spring 19.

The base portion of the coin carriage is provided with a slot 20 adapted to be brought into registry with the slot 12 of the ledge 5. The slot 20 is offset with respect to the slot 17 of the coin carriage and consequently when said slot 20 is in registry with the slot 12 the slot 17 of the extension 16 will have been moved out of registry with the slot 7 of the plate 1. s

A. double ended cam 21 is rotatably mounted on theplate 1 adjacent the free vertical edge of the extension 16 of the coin carriage and is adapted to shift said coin carriage in a horizontal plane against the tension of the coil spring 19 in a manner to bring the slot 20 into registry with the slot 12. lhe cam 21 is manually operated through the medium of the knob 22 which is rigidly connected thereto by the shaft 23 whichextends rotatably through theplate 1 and upon which the cam '21 is fixed. V A coin chute 2 1 has its open upper end disposed beneath the slot 12 to receive coins therefrom and said chute 24' extends to the connecting or other coin operatedmechanism of the machine. A chute 25 communicates at one end with the slot 8 of the upstanding flange 7 and said chute 25 may extend to any desired point to deposit the coins or slugs which enter the same. I

In use, the coin carriage is normally maintained in the position illustrated in the drawinggs by the spring 19. A coin is inserted through the, slot 7 of the plate 1 and the slot 17 of the upstanding extension 16 of the coin carriage. When the coin passes through the slot 17 it rolls downwardly on the inclined base, portion 13. ofthe coin carriagebetween the webs 9 and 10. If the coin is of smaller diameter than the prescribed coin for operating the machine, the same will roll through the slot 8 and pass downthechute 25. If the eein is of the. proper size, the same will. not

tension of thecoifl spring 19 in a manner to ibrmg the-slot20 in the base portion 13 into.

registry with the slot 12 of the ledge ,5 when the coin will pass through said slots and drop into the coin chute 24 which conveys the same to the connecting or other mechanism of the machine. Coins or slugs of greater diameter than the prescribed coin will notenter the slot 7 as said slot is of a length to admit no coin of greater diameter than the one prescribed.

It is believed that the many advantages of a fraud preventing devicefor coin controlled machines constructed in accordance with this invention will be readily understood, and althougn the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction maybe had which will fall within the scope of the invention as claimed.

What is claimed is 1. A fraud preventing device for coin controlled machines of the character described comprising a plate, an integral platform extending from one side of theplate, a vertical flange mounted on the platform and extending therefrom in spaced Opposed relation to the plate, said plate, the platform and the flange provided with alined coin slots, the slot in the flange being comparatively short and adapted to prevent the passage of a. coin of predetermined diameter therethrough, webs disposed between the plate and flange on opposite sides of the slots therein and terminating in spaced relation to the plates, a slidable member mounted for horizontal movement on the platform between the plate and the flange and having spaced slots therein for registrywith the slot in the plate and with the slot in the platform in a manner to close one of said slots when the other is open, and means mounted on the plate for manually operating the slide. Y 2. A fraud preventing device for coin controlled machines of the character described comprising a plate having acoin receiving slot therein, a platform extending from the plate having a coin slot therein, an upright flange mounted on the platform and disposed in spaced opposed relation .to the plate, sa1d flange being provided with a comparat vely short slot in alignment with the slot in the plate and adapted to receive coins therefrom,

said flange adapted to engage with coins of a predetermined diameter and retain the same, a slidable spring controlled member mounted for longitudinal movement on the platform, integral webs extending toward the plate from the flange on opposite sides of thevslot therein and forming a coin retaining chamher, the slidable member being provided with slots for registry with .the slot in the plate and the slot in the platform and adapted to close one of said slots when the other is open, and means on the plate for manually operating the slide.

In testimony whereofI affix my signature.

- WILLIAM MACKAY/ 

